• • 上一篇    下一篇

黄鼠(Citeltus dauricus)基础代谢率、静止代谢率、化学热调节强度的季节性变化研究

宋晓崴, 曾缙祥   

  1. 天津师范大学生物系
  • 出版日期:2006-07-26 发布日期:2007-09-14

SEASONAL VARIATION IN ENERGY METABOLISM OF GROUND SQUIRREL(CITELLUS DAURIUS)

SONG Xiaowei, ZENG Jinxiang   

  • Online:2006-07-26 Published:2007-09-14

摘要: 本文测定了达乌尔黄鼠(Citellus dauricus)的耗氧量等指标,从代谢率与代谢调节方面探讨其能量代谢的季节性变化规律。结果表明,黄鼠的中性温度区在春、夏、秋各季有2-3℃的差别。此三个季节的基础代谢率(单位t毫升氧/克·小时,下同)分别为3.6182、2.6396、2.6005。舂季显著高于夏季与秋季。在冬眠状态下室温为5℃时静止代谢率最低,为0.4436。在非冬眠各个季节,即0℃至下临界温度范围内静止代谢率与环境温度里负相关并具线性回归。黄鼠的化学热调节强度较低,特别是在秋季和在冬眠状志下这种能力受到较深程度的抑制。黄鼠在非冬眠期的基础代谢率与体表面积有密切相关,冬眠期两者之问的相关不明显。

关键词: 黄鼠, 冬眠, 静止代谢率, 基础代谢率, 中性温度区, 耗氧量

Abstract: Oxygen consumption and other energetic parameters were in nonnothermic ground squirrels (Citellus daurieus) measured in spring.summer and autumn and also in hibernating hypothermic ones in winter,so as to deal with the regularity of seasonal variation energy metabolism of this hibernator. The results showed that in spring,summer and autumn the thermoneutral zone has about±3℃ vatiation.The BMR(ml/g-1.h-1 )was 3.6182,2.6396 and 2.6005 respectively.Of which the differenees between spring and summer ,between spring and autumn were significant.The lowest lRMR, 0.4436, was obtained at Ta of 5℃ in winter.Over the Ta ratges 0℃ to the low critical temperature.a signiflean tly negaHve correlation and a regression was observed between the Ta and the RMR in every normotherme season.The chemical thermoreguatien of C.dauricus was lower , especially in autumn,and it was inhibited while the animals were hibernating BMR in normothemle C.dagrlcus was closely related to the area of body surface,but the dependence on the area of body surface disappeared in hibernation hypothermia.

Key words: Ground squirrel Citellus dauricus, Hibernation, Resting metabolic rate, RMR, Basal metabolic rate BMR, Thermoneutral zone, Oxygen consumption